将电阻R1和R2并联后接入电路中,通过R1和R2的电流强度比为3:1,若将电阻R1和R2串联接入电路中则R1和R2两端的电压比为_____,消耗的功率之比为______.
问题描述:
将电阻R1和R2并联后接入电路中,通过R1和R2的电流强度比为3:1,若将电阻R1和R2串联接入电路中则R1和R2两端的电压比为_____,消耗的功率之比为______.
答
都是1:3 并联后电流比为3:1 说明电阻之比为1:3